you shouldn't have questioned without his miranda. what happens then? that means, they throw out his statement. so what? they don't need his statement in connection. >> they have all the other evidence. >> this is about getting intelligence from him. not a statement they can use in court. >> and these charges expected to be filed. almost certain to face the death penalty. >> it will be a death-eligible charge for sure. a decision made later to seek the death penalty. the use of a weapon of mass destruction would be a death-eligible. >> the fbi interviewing the older brother in 2011. some members of congress saying that was a missed opportunity, criticizing the fbi for not keeping their eyes on tamerlan. >> well, let's look at this. hundreds of thousands of versions of him are floating around the country. the fbi go, they do a background, sometimes ultimately interview them. visiting jihadist websites are not against the law. a lot of teenagers and young adults are doing that. so, the question is, you have to do an assessment if you're an fbi agent. do y